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-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtGui module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial Usage
-** Licensees holding valid Qt Commercial licenses may use this file in
-** accordance with the Qt Commercial License Agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Nokia.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-#ifndef QTRANSFORM_H
-#define QTRANSFORM_H
-
-#include <QtGui/qmatrix.h>
-#include <QtGui/qpainterpath.h>
-#include <QtGui/qpolygon.h>
-#include <QtGui/qregion.h>
-#include <QtGui/qwindowdefs.h>
-#include <QtCore/qline.h>
-#include <QtCore/qpoint.h>
-#include <QtCore/qrect.h>
-
-#if defined(Q_OS_VXWORKS) && defined(m_type)
-# undef m_type
-#endif
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Gui)
-
-class QVariant;
-
-class Q_GUI_EXPORT QTransform
-{
- Q_ENUMS(TransformationType)
-public:
- enum TransformationType {
- TxNone = 0x00,
- TxTranslate = 0x01,
- TxScale = 0x02,
- TxRotate = 0x04,
- TxShear = 0x08,
- TxProject = 0x10
- };
-
- inline explicit QTransform(Qt::Initialization) : affine(Qt::Uninitialized) {}
- QTransform();
- QTransform(qreal h11, qreal h12, qreal h13,
- qreal h21, qreal h22, qreal h23,
- qreal h31, qreal h32, qreal h33 = 1.0);
- QTransform(qreal h11, qreal h12, qreal h21,
- qreal h22, qreal dx, qreal dy);
- explicit QTransform(const QMatrix &mtx);
-
- bool isAffine() const;
- bool isIdentity() const;
- bool isInvertible() const;
- bool isScaling() const;
- bool isRotating() const;
- bool isTranslating() const;
-
- TransformationType type() const;
-
- inline qreal determinant() const;
- qreal det() const;
-
- qreal m11() const;
- qreal m12() const;
- qreal m13() const;
- qreal m21() const;
- qreal m22() const;
- qreal m23() const;
- qreal m31() const;
- qreal m32() const;
- qreal m33() const;
- qreal dx() const;
- qreal dy() const;
-
- void setMatrix(qreal m11, qreal m12, qreal m13,
- qreal m21, qreal m22, qreal m23,
- qreal m31, qreal m32, qreal m33);
-
- QTransform inverted(bool *invertible = 0) const;
- QTransform adjoint() const;
- QTransform transposed() const;
-
- QTransform &translate(qreal dx, qreal dy);
- QTransform &scale(qreal sx, qreal sy);
- QTransform &shear(qreal sh, qreal sv);
- QTransform &rotate(qreal a, Qt::Axis axis = Qt::ZAxis);
- QTransform &rotateRadians(qreal a, Qt::Axis axis = Qt::ZAxis);
-
- static bool squareToQuad(const QPolygonF &square, QTransform &result);
- static bool quadToSquare(const QPolygonF &quad, QTransform &result);
- static bool quadToQuad(const QPolygonF &one,
- const QPolygonF &two,
- QTransform &result);
-
- bool operator==(const QTransform &) const;
- bool operator!=(const QTransform &) const;
-
- QTransform &operator*=(const QTransform &);
- QTransform operator*(const QTransform &o) const;
-
- QTransform &operator=(const QTransform &);
-
- operator QVariant() const;
-
- void reset();
- QPoint map(const QPoint &p) const;
- QPointF map(const QPointF &p) const;
- QLine map(const QLine &l) const;
- QLineF map(const QLineF &l) const;
- QPolygonF map(const QPolygonF &a) const;
- QPolygon map(const QPolygon &a) const;
- QRegion map(const QRegion &r) const;
- QPainterPath map(const QPainterPath &p) const;
- QPolygon mapToPolygon(const QRect &r) const;
- QRect mapRect(const QRect &) const;
- QRectF mapRect(const QRectF &) const;
- void map(int x, int y, int *tx, int *ty) const;
- void map(qreal x, qreal y, qreal *tx, qreal *ty) const;
-
- const QMatrix &toAffine() const;
-
- QTransform &operator*=(qreal div);
- QTransform &operator/=(qreal div);
- QTransform &operator+=(qreal div);
- QTransform &operator-=(qreal div);
-
- static QTransform fromTranslate(qreal dx, qreal dy);
- static QTransform fromScale(qreal dx, qreal dy);
-
-private:
- inline QTransform(qreal h11, qreal h12, qreal h13,
- qreal h21, qreal h22, qreal h23,
- qreal h31, qreal h32, qreal h33, bool)
- : affine(h11, h12, h21, h22, h31, h32, true)
- , m_13(h13), m_23(h23), m_33(h33)
- , m_type(TxNone)
- , m_dirty(TxProject) {}
- inline QTransform(bool)
- : affine(true)
- , m_13(0), m_23(0), m_33(1)
- , m_type(TxNone)
- , m_dirty(TxNone) {}
- inline TransformationType inline_type() const;
- QMatrix affine;
- qreal m_13;
- qreal m_23;
- qreal m_33;
-
- mutable uint m_type : 5;
- mutable uint m_dirty : 5;
-
- class Private;
- Private *d;
-};
-Q_DECLARE_TYPEINFO(QTransform, Q_MOVABLE_TYPE);
-
-/******* inlines *****/
-inline QTransform::TransformationType QTransform::inline_type() const
-{
- if (m_dirty == TxNone)
- return static_cast<TransformationType>(m_type);
- return type();
-}
-
-inline bool QTransform::isAffine() const
-{
- return inline_type() < TxProject;
-}
-inline bool QTransform::isIdentity() const
-{
- return inline_type() == TxNone;
-}
-
-inline bool QTransform::isInvertible() const
-{
- return !qFuzzyIsNull(determinant());
-}
-
-inline bool QTransform::isScaling() const
-{
- return type() >= TxScale;
-}
-inline bool QTransform::isRotating() const
-{
- return inline_type() >= TxRotate;
-}
-
-inline bool QTransform::isTranslating() const
-{
- return inline_type() >= TxTranslate;
-}
-
-inline qreal QTransform::determinant() const
-{
- return affine._m11*(m_33*affine._m22-affine._dy*m_23) -
- affine._m21*(m_33*affine._m12-affine._dy*m_13)+affine._dx*(m_23*affine._m12-affine._m22*m_13);
-}
-inline qreal QTransform::det() const
-{
- return determinant();
-}
-inline qreal QTransform::m11() const
-{
- return affine._m11;
-}
-inline qreal QTransform::m12() const
-{
- return affine._m12;
-}
-inline qreal QTransform::m13() const
-{
- return m_13;
-}
-inline qreal QTransform::m21() const
-{
- return affine._m21;
-}
-inline qreal QTransform::m22() const
-{
- return affine._m22;
-}
-inline qreal QTransform::m23() const
-{
- return m_23;
-}
-inline qreal QTransform::m31() const
-{
- return affine._dx;
-}
-inline qreal QTransform::m32() const
-{
- return affine._dy;
-}
-inline qreal QTransform::m33() const
-{
- return m_33;
-}
-inline qreal QTransform::dx() const
-{
- return affine._dx;
-}
-inline qreal QTransform::dy() const
-{
- return affine._dy;
-}
-
-inline QTransform &QTransform::operator*=(qreal num)
-{
- if (num == 1.)
- return *this;
- affine._m11 *= num;
- affine._m12 *= num;
- m_13 *= num;
- affine._m21 *= num;
- affine._m22 *= num;
- m_23 *= num;
- affine._dx *= num;
- affine._dy *= num;
- m_33 *= num;
- m_dirty |= TxScale;
- return *this;
-}
-inline QTransform &QTransform::operator/=(qreal div)
-{
- if (div == 0)
- return *this;
- div = 1/div;
- return operator*=(div);
-}
-inline QTransform &QTransform::operator+=(qreal num)
-{
- if (num == 0)
- return *this;
- affine._m11 += num;
- affine._m12 += num;
- m_13 += num;
- affine._m21 += num;
- affine._m22 += num;
- m_23 += num;
- affine._dx += num;
- affine._dy += num;
- m_33 += num;
- m_dirty |= TxProject;
- return *this;
-}
-inline QTransform &QTransform::operator-=(qreal num)
-{
- if (num == 0)
- return *this;
- affine._m11 -= num;
- affine._m12 -= num;
- m_13 -= num;
- affine._m21 -= num;
- affine._m22 -= num;
- m_23 -= num;
- affine._dx -= num;
- affine._dy -= num;
- m_33 -= num;
- m_dirty |= TxProject;
- return *this;
-}
-
-inline bool qFuzzyCompare(const QTransform& t1, const QTransform& t2)
-{
- return qFuzzyCompare(t1.m11(), t2.m11())
- && qFuzzyCompare(t1.m12(), t2.m12())
- && qFuzzyCompare(t1.m13(), t2.m13())
- && qFuzzyCompare(t1.m21(), t2.m21())
- && qFuzzyCompare(t1.m22(), t2.m22())
- && qFuzzyCompare(t1.m23(), t2.m23())
- && qFuzzyCompare(t1.m31(), t2.m31())
- && qFuzzyCompare(t1.m32(), t2.m32())
- && qFuzzyCompare(t1.m33(), t2.m33());
-}
-
-
-/****** stream functions *******************/
-#ifndef QT_NO_DATASTREAM
-Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTransform &);
-Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTransform &);
-#endif
-
-#ifndef QT_NO_DEBUG_STREAM
-Q_GUI_EXPORT QDebug operator<<(QDebug, const QTransform &);
-#endif
-/****** end stream functions *******************/
-
-// mathematical semantics
-Q_GUI_EXPORT_INLINE QPoint operator*(const QPoint &p, const QTransform &m)
-{ return m.map(p); }
-Q_GUI_EXPORT_INLINE QPointF operator*(const QPointF &p, const QTransform &m)
-{ return m.map(p); }
-Q_GUI_EXPORT_INLINE QLineF operator*(const QLineF &l, const QTransform &m)
-{ return m.map(l); }
-Q_GUI_EXPORT_INLINE QLine operator*(const QLine &l, const QTransform &m)
-{ return m.map(l); }
-Q_GUI_EXPORT_INLINE QPolygon operator *(const QPolygon &a, const QTransform &m)
-{ return m.map(a); }
-Q_GUI_EXPORT_INLINE QPolygonF operator *(const QPolygonF &a, const QTransform &m)
-{ return m.map(a); }
-Q_GUI_EXPORT_INLINE QRegion operator *(const QRegion &r, const QTransform &m)
-{ return m.map(r); }
-Q_GUI_EXPORT_INLINE QPainterPath operator *(const QPainterPath &p, const QTransform &m)
-{ return m.map(p); }
-
-Q_GUI_EXPORT_INLINE QTransform operator *(const QTransform &a, qreal n)
-{ QTransform t(a); t *= n; return t; }
-Q_GUI_EXPORT_INLINE QTransform operator /(const QTransform &a, qreal n)
-{ QTransform t(a); t /= n; return t; }
-Q_GUI_EXPORT_INLINE QTransform operator +(const QTransform &a, qreal n)
-{ QTransform t(a); t += n; return t; }
-Q_GUI_EXPORT_INLINE QTransform operator -(const QTransform &a, qreal n)
-{ QTransform t(a); t -= n; return t; }
-
-QT_END_NAMESPACE
-
-QT_END_HEADER
-
-#endif
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